The temperature of R134a as it exits a compressor if the R13

The temperature of R-134a as it exits a compressor, if the R-134a enters the compressor as a saturated vapor at 80 psia and exits at 200 psia, the mass flow rate is 0.1 lbm/s and the power supplied to the compressor is 2 Btu/s.

Solution

At 80psia hg= 176 btu/lb =h1

Power = m *( h2-h1)

h2 = h1+ power/m = 176+ 2/0.1 = 196btu/ lb

Now from r134a properties

At H= 196 btu/lb P= 200 psia

Temperature = 175 F